Draft regulator



May '12 1931.

c. o. SHTALEY DRAFT REGULATOR Filed April 27. 1929 bk mun 0-57? )NVENTQRATTORNEY 1 Other je ts 'ppe ii Patented-May 12 193 1;

' eaa :g msmscomfls t xxlnm vol 1 Application filed -;A ;ii;27,

. i This inventionrelates,-to;certain:n0ve1.iinr '3-provements,in'draftiregulators.and, has1: f0r,; I V M V p th a om anyir w s w re liihav zil sftmt i a pr rre i gb i qilstru i n foa y invs 'q'ii c rcb bnstio lapparatu Wh sk-m .bs fle ects ofmy kinvcntionto; p v pp p v 3 or ..;a,.s ;e;amq boiler and these. dejices mayitsiprincipalobject the aprovision 10f .aanyin ir proved'constructionofz this icharacter'swhich 5. willhe highly efficient inman actur 1. It is among theobj provide a draft regulator Whichf'mayfb'e mounted in the "flue: Pipeexteniding between I I 10acombustion apparatus and a :flue to interrupt the draft; passingtherethroug'h" by pro- 1 vidingan opening intermediate saidcombus- Y'gtionlwiththe. :comkpustion apparatusisa ,flue 11 of any approyediorm.A flue pipe 12 extends betWeen the combustion apparatus :10; andthe;.flue1-I1Qfor the lpurposewelh under- ;stood; in the art; .In, the;present instance I tion apparatus and said flue. M H Another-fob'ectof,he-inventionfis to provide a derrice ofethe above named characterwhich,wil1 be jarranged in, a mannersuch that the magnitude. of theopening. will be dependent uponthe forcerof chedrafi passing 2 Another.objec -ovfgthe' inention Vide a device of the ahove,.namedcharacterwhich: will be arranged-so that thei'rnfember for regulating themagnitude of said, opening will. be supported for relatively free. 5movement. and which wi11 :be arranged 1 so that an adjustablecounterbalancemaybe, provided so. as to regulate said movementk t i Ai11,further obi@ t: f e. nv ntion i }.to prov d a v y,- s mple;a rangemntefor supporting the -regulating ,l ne nhenandjthe;

counterbalance therefor. I

-l The invention -kconsists;iln ,the nove com hi nation andarrangementflofgparts og be y i hereinafter described and claimed. 1 2

. The? invention'willbe best understood hy gr 'e c -t t e a c mp nyi dawi ,showingthe preierredlform of construction: n L HA".pglatev 1 'sprovidedrjwhi h is of a diamewean which yentionFin association .with. afiuejpipeexiinus'e and economical ,t nmi wariemg; preferred form r ofconstruction; to nny i n-v tending between a con bustionapparatus and.

1. 19292 Serial n rasaeqQ substant ally; on the {lineA- -{l Fig.2.

approved;, fform'-such as a warm air furnagev eitherobe the coal burningtype or 7 they may he arranged such that any other type ofshowasubstantiallyT-shaped, section 13v in the; pipe-'12 QZWhiCh..includeslan upstanding lYIy,irnproved apparatus is intended toassociated with the neck 14 and; includes a ma-in bodyportion l5 whichcomprises a neck portion that terminates in a conical .neckgl and it istogbe understoodflthatanyi desired" "arrangement Imight' begprovidedhich l mamas the} neck. 14.

portion 17 istruncated so as to proyids an opening 8;:

w heady) is qrrned on the neck portion '16in spaced reiationwith thelower endthere-: of and insthe =P s e ins an e e c t i e k portionasfbeing telespoped within neck; andltheg head; 19} servesto 1 1ection-ihetsveen these elements. I I

f risl slltly a r h he m te f. h psn ng w dth Plate 2 n nd d-t0-.operategiyith the opening 18 so as to close passa ithe fe ro ghwhe e gs f, t pla 21. arebroughtintqenga em ntwith' thei of the port on .11 *arm dr h r p n g 8.. ,bein g understood that the p1ate;2l iis fitted in rbrlrsf; th p r i n .1

niv ardmoyementofithe neck 16 with respect I I I esired thje'portionofthe slac 6 n egi s fih n il k may r ps as. indicated at120 so; as toinsure better com v -t P915 1 7 T im mt 1 l ia s neri callyv indicatedby22jwhich1-includes a aiQQiLQ I' iQ JQ23Qthtf1S d sposed on. the

portion 17 and secured thereto in any approved inanner as by the rivets24. The bracket 22 includes an upstanding portion 25 which terminates atits upper end in a portion 26 that extends substantially at right anglesto the portion and the portion 26 terminates in a portion 27 thatextends downwardly from the portion 26 substantially parallel to butspaced from the portion .25 and it will thus be seen that asubstantially U-shaped formation is arranged at the upper end of thebracket 22. The portion 27 is disslot 28 may be expeditiously formedtherein.

. "the'inember'21 is secured to the stem 31.

.At'substantially the'apex-of the. member21 an opening 30 is providedthrough which a stem 31'is extended. Suitable nuts 32 and 33 onthe'stem'31are arranged on each side of the member21 so as to secure themember 21m theistem 31 and if desired the lower end of thes'tem31maylbe'p'eened'so'as to prevent displacement of the nut 33 andinthis mannfi the upper end of the stem 31 a eye 34: is

2 formed; p

5 The'counterbalance arrangementfor the plate'21'includesa lever 35 Atone end-of the lever 31 an eye 36 is formed in which the eye 34'isintended tobe connected as-clear- 1y illustrated in Figs. 2 and 4. Theopposite end of the lever35 is screw threaded as indicated at 37.Intermediate the eye 36 and the screw threaded portion 37 an o'fl'setportion 38 is provided in the lever 35 and the offset portion 38provides a fulcrum. V bling the device the screwfeyes 34and 36 areinterconnected and the lever 35 has the end In assemportion '37'thereofextended through the open- .ing'29 and the slot 28 until the fulcrumpro- I videdbythe'oflset' portion 38 restsin the open;

ing 29 and it is apparent that the portion of :the lever 35 adjacentthis oflset portion 38 7 will extend through the slot 28. Itis,therefore, apparent that the lever 35 may pivot about the bracket 22in a'vertica-l planeand'it is apparent that the portion of-the lever 35extending through the slot28 will prevent *movement thereof in ahorizontal plane. In order to counterbalance the weight of the meinber21 and the portions cooperating therewith onthe portion of theleverextend- 9 ing from the fulcrum 29 andcarryingthese "parts I provide theweight members 39. The

weight members 39 are'intended to have openings provided therein throughwhich the screw'threaded'portion of'the lever 37 maybe freely extendedor if desired these openings may be arranged for screw threadedengagement with the screw threads 37 on the lever 35. Arranged oneachside of the weight members 29 are nuts 40 and 41 which serve to lock theweight members 39' in position on this end of the lever 35.

The weight members 29 are intended to be dis osedso as to not onlycounterbalance the weight of the member 21 and the parts associatedtherewith but are also intended to be "positioned such that they willhold the member.21in closing position with respect to the opening 18until a draft of predetermined :force is present in the flue pipe 12 atwhich time the air pressure on the upper surface of the member 21willact thereon to move the member 21. downwardly to provide an openangin the flue pipe 12 which will obviously check the force of the draftpassing there- ,through and that the time this checking overcomes thedraft the weights 39 wi ll serve to reposition the member 21 in closingposition with respect to the opening 18.

While I have set forth that "two weight members 39 are provided it is-to be understooditha't thisarrangein'ent is employed only to afford agreater rangeof adjustmentand a greater or less number of weight membersm ght be employed without departing from the purview of my invention. Itis also apparent that I have described an arrangement which isofrelatively inexpensive construction and which may be very economical/inmanufacture and onein which the likelihood of parts becoming broken or.worn out is ,reduced'to aminimum.

While I- have illustrated and -described the preferred form ofconstruction for carrying iny' in vention into effect, this is capableof variation and modification, without departing from the spirit of theinvention. I,

.there'fore,'do not wish "to'be limited to the precise details ofconstruction set-forth, but 'desireto avail-mysel'fof such variationsand modifications as come within the scope of'the appended claims. l

Having thus described my invention what *Iclaimas newanddesire toprotect hy*Let-.

ters Patent is v 1. In a draft regulator of the character stated, amemberadapted for connectioniwith a flue pipe including a cylindricalneck portion adapted to be projectedinto a flue pipe and including afrusto-conical headportion havii acentrally disposed'circ-ular openingprov ed'therein, a movable capmember substantially 'a sphericalsegmentin shapemovable in avertica'l plane'interiorly of saidfrusto-oonical portion for closing saidxopenting,v the "lower'annularedge portion of said last name d member "being adapted forhaving abutting engagement with theupper annular edge of saidfrusto-conica'l portion interiorly thereof, a bracket carried by saidfrusto-conical portion including a substantially U -shaped'portionat'the end thereof providing an arm portion, said bracket having anopening formed in the stem f portion. thereof "and having a slot formedin said arm portion,ia lever extended through said opening andsaid'slot, means a for connecting one end of said-lever to said movablecap member, and adjustablemeans on the other end of said lever forcounterbalanoing said movable cap member.

tion adapted to be, pro and including a frusto-conical head portionhaving a centrally disposed circular opening provided therein, a movablecap member substantially a spherical segment in shape mov-v able in avertical plane interiorly ofsaid frusto-conical portion for closing saidopening, the lower annular edge portion of said last-named member beingadapted for hav- T ing abuttingengagement with the upper-annular edge ofsaid frusto-conical portion interiorly thereof, a bracket carried bysaid frusto-conical portion including a substan tially U-shaped portion.atthe upper end thereof providing an arm portion, A said bracket havingan opening formed in the v stem portion thereof and having a slot formedin said armportion, a lever extended through said openingfand said.slot, said lever including an oflset substantially 'V- shaped portionpivotallymounted in said opening providing a fulcrum whereby when 3 saidcap member is moved said leverwillbe pivoted on said fulcrum and guidedin" a vertical plane through said slot, means for connecting one end ofsaid lever to said movable cap member, and adjustable means on:; theotherend of said lever for counterbal- I ancing said movable cap member.w r

In testimony whereof I aflix my signature.

- CARL O. STALEYQ

